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Income Taxes (Schedule of Components of Income Tax Expense by Applying Weighted-Average Statutory Income Tax Rate) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Pre-tax income (loss) $ 138,629 $ (28,553) $ (76,549)
Weighted-average statutory income tax rate (as a percent) 35.40% 32.80% 33.40%
Income tax expense at weighted-average statutory tax rate on pre-tax income (loss) $ 49,030 $ (9,353) $ (25,604)
Change in valuation allowance (17,037) 63,880 81,360
Non-deductible expenses 11,993 6,368 15,641
Tax benefits, including Brazil and other (14,437) (17,377) (45,223)
Withholding income taxes on intercompany transactions 22,379 1,557 369
Expiration and changes in tax loss carryforwards 18,291 0 7,852
Differences including exchange rate and inflation adjustment (9,947) (25,347) (4,440)
Alternative taxes (114) 2,386 3,070
Others (517) 702 (546)
Income tax expense $ 59,641 $ 22,816 $ 32,479